> 2. I get the High, Low, Open, Close for the xth number bar in 5-min, 15-min bar for today?

of course not

Although NeoTicker can do that and we do have users using the DDE link, personally I do not recommend that because Microsoft has not updated its DDE services for WinXP thus there are many known situations that DDE connection will not be stable, say, connecting to Excel.

It is even mentioned at msdn.microsoft.com that there is no plan to fix those "known issues".